One reason researchers pointed to, according to the Huffington Post, was that apples contain polyphenols and antioxidants - like red wine and chocolate - which can stimulate blood flow to the genitalia and vagina, boosting arousal.

Apples are also high in phloridzin, which is structurally similar to the female sex hormone estradiol, which plays a huge role in vaginal lubrication and female sexuality.

So there we go ladies, an apple a day won't just keep the doctor away after all.